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why are older data models are being replaced by new data models
State as Location within a Program In this traditional approach, location of control inside a program totally defines the program state. Any finite state machine may be implem
what is the need of a log in dbms
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
Need a sample of a clinic database relationships
What is the difference among a primary index and a secondary index? Primary Index: A primary index is an ordered file whose records are of fixed length along with two fields.
What does the cardinality ratio specify? Mapping cardinalities or cardinality ratios state the number of entities to which another entity can be associated. Mapping cardinaliti
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Consider the 1ollowin8 relation: CAR SALE (Car_id, Option_type, Option_listprice, Sale_date, Option_discountedprice) This relation refers to options installed in cars (e.g., crui
For problems 1-4, give all candidate keys for the tables with FDs specified. Composite candidate keys must be put in parentheses, and candidate keys must be separated with commas
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